Variable valency is shown by [MP PMT 1986; AMU 1999]

1.	Variable valency is shown by [MP PMT 1986; AMU 1999]
A.	\[Na\]
B.	\[Cu\]
C.	\[Mg\]
D.	\[Al\]
Answer» C. \[Mg\]

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Variable valency is shown by [MP PMT 1986; AMU 1999]

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